is it to tell bill clinton that this march through a second clinton presidency is going to be a bit messy? is it to tell the democrats overall out in the country that they'll have a choice in the winter and spring of 2016? well, the question for me, why is joe biden, an experienced leader, willing to pay the price for what he is now putting out there, the need to back up his words with an all-out battle for the nomination with someone so many believe has it all locked up. after all, these entry tickets aren't free. why put himself out as vice president biden has now done if he knows at some point between now and the iowa caucuses, he'll have to pull himself out? or back. howard fineman is editorial director of "the huffington post" and msnbc news political analyst. mark halperin is the co-author of "double down", a great book and msnbc analyst as well. howard, biden doesn't have to say these things. he can say heim not going to talk about that. he can say that's always on people's minds. i don't want to talk about it, barbara. but barbara walters is one tough interviewer, and she stuck at